If you have the window handle of the process, you should be able to change the title of the window using the SetWindowText api. I've never done it, so I don't have any example code. Take a look at this and see if it helps:

While I got it to work as per the example with notepad.exe, it doesn't when calling our console app, wordpad.exe or cmd.exe. Opens the progs ok, but no title bar change. That only works with notepad.exe.